<html window-resizeable>
    <head>
        <title>Test</title>
        <style></style>
        <script type="text/tiscript"></script>
    </head>
    <body>

      <p>This is "main" application window.</p>

      <p>Note: you can also use main "trayicon window" to show application's UI.</p>

    </body>
</html>